Integral tool carrier



952 J. G. LINDEMAN ETAL 2,616,349

INTEGRAL TOOL CARRIER Filed Sept. 17, 1948 6 Sheets-Sheet 1 INVENTORS.JESSE G.LINDEMAN, LAWRENCE F. HEINLJ ROBERT D. KREHBIEL, ORIE L. DURLANDv ORNEYS Nav. 4, 1952 J. G. LINDEMAN ETAL 2,616,349

INTEGRAL TOOL CARRIER Filed Sept. 17, 1948 6 Sheets-Sheet 2 & r N N 2.

(O (a N E (D E U.

' INVENTORS. JESSE G. LINDEMAN, LAWRENCE E HEINL, ROBERT D. KREHBIEL,ORIE L. DURLAND Nov. 4, 1952 J. G. LINDEMAN ETAL 2,616,349

INTEGRAL TOOL CARRIER Filed Sept. 17. 1948 6 Sheets-Sheet 3 FIG. l3.

INVENTORS. JESSE G. LINDEMAN, L. F. HEINL,

ROBERT D. KREHBIEL, ORIE L. DURLAND A ORNEYS Nov. 4, 1952 J. G. LINDEMANEI'AL INTEGRAL TOOL. CARRIER 6 Sheets-Sheet 4 Filed Sept. 17, 1948 FIG.7

INVENTORS JESSE G. LINDEMAN, LAWRENCE F HEINL, ROBERT D. KREHBIEL, ORIEL. DURLAND ORNEYS Nov. 4, 1952 J. G. LINDEMAN ETAL 2,616,349

INTEGRAL TOOL CARRIER Filed Sept. 17, 1948 6 Sheets-Sheet 5 FIG. IO

INVENTORS. JESSE G. LINDEMAN, LAWRENCE F. HEINL ROBERT D. KREHBIEL, ORIEL. DURLAND TTORNEYS Patented Nov. 4, 1952 UNITED STATES PATENT OFFICEINTEGRAL TOOL CARRIER Application September 17, 1948, Serial No. 49,694

12 Claims.

The present invention relates generally to agricultural implements andmore particularly to draft devices for mountin agricultural implementson or connecting them to farm tractors or the like.

The object and general nature of the .present invention is thepro-vision of a new and improved quick detachable tool carrier of thetool bar type adapted to be mounted on a farm tractor and to receive aplurality of ground working and other implements. A further feature ofthis invention is the provision of a tool carrier that is adapted to becontrolled by the regular power lift of the tractor and a still furtherfeature of this invention is the provision of a tool carrier which, whenattached to the tractor, forms an integral part thereof and serves asmeans for carrying implements and the like in a compact and closelycoupled arrangement, whereby the entire outfit is practically asmaneuverable as the tractor alone.

A further feature of this invention is the provision of new and improvedmeans, acting through the tool carrier, for adjusting the implementdepth, the amount and degree of suction of earth working tools, and thelateral or transverse leveling of the implements. it is a feature ofthis invention to provide a tool carrier of the type which may beadjusted to accommodate free lateral movement of the tool carried by thecarrier or the parts may bearran-ged so that the implement may be lockedin place laterally, as for transporting or when operating tools where alaterally rigid hitch is desired.

These and other objects and advantages of the present invention will beapparent to those skilled in the art after a consideration of thefollowing detailed description of the preferred structure, taken inconjunction with the accompanying drawings.

In the drawings:

Figure l is a side view and Figure 2 is a rear view of the preferredform of tractor-carried or integral tool carrier, shown as mounted on atractor of the type having a power lift including a rear transversepower lift rockshaft.

Figure 3 is a fragmentary sectional view taken along the line 33 ofFigure 1, showing the ball and socket type of connection between thefront and rear ends'of the laterally spaced lower draft links and thetractor and tool carrier hitch frame. I

Figure 4 is a fragmentary perspective view of the drawbar bracket ordraft link support and Further, V

its connection to the tractor and the tractor drawbar support.

Figure 5 is a partial or fragmentary plan view of power lift arm orupper link connection between the tool carrier hitch frame and thetractor power lift rockshaft.

Figures 6 and 7 are sectional views taken, respectively, on the lines6-6 and l--! of Figure 5, the ball joint arm being omitted in Figure 7Figures 8 and 9 are section-a1 views taken respectively along the lines8-8 and 9--9 of Figure 1, showing the preferred form of tool barmounting.

Figure 10 is a fragmentary side view showing the adjustable stop meanslimiting the lower position of the tool carrier.

Figure 11 is a fragmentary perspective view showing the too-l carrieradjusted for operating with the tool bar in a laterally tilted position,as may be desirable when using a plow attachment, with the right handrear tractor wheel operating in a previously formed furrow.

Figure 12 is a fragmentary view showing the means for limiting thelateral movement of the tool bar relative to the hitch frame.

Figure 13 is a detail perspective of one of the stop members shown inFigure 12.

Figures 14 and 15 are side and end views, respectively, of one of thequick detachable pins employed for connecting the tool carrier with thetractor.

Figures 16 and 17 are plan and side views of a modified form of toolbar.

Figures 18, 19 and 20 are plan, side and rear views of another form oftool bar construction.

Referring first to Figures 1 and 2, the draft device of the presentinvention shown as a tool carrier, indicated in its entirety by thereference numeral I, mounted on a tractor 2 of the type having acontrollable power lift unit 3 which is arranged to operate a transversepower lift rockshaft 4, the ends of which extend from opposite sides ofa power lift rockshaft housing 5. The tractor and power lift isconventional, so far as the present invention is concerned, and may besimilar to that shown in U. S. Patent 2,302,637, issued November 17,1942, to E. McCormick, et al. The tractor 2 includes a rear axle housing1 in lateral extensions 8 of which are axle shafts 9 on which reartraction wheels II are mounted. The lower portion of the rear axlehousing I, centrally of the tractor, carries a drawbar support l2 inwhich a laterally swingable dnawbar l3 is disposed.

The draft device or tool carrier I includes a generally verticallydisposed rigid hitch frame 20 which comprises a lower main frame unit 2iand an upper rigid leveling frame 22. As best shown in Figures 2 and 11,the lower frame unit 21 comprises a rigid frame section made up of alower transverse tubular member 2 3 to each end, of which a pair ofvertical, closely spaced frame plates 25 and 23 are connected, as bywelding or the like. Gusset plates 27 are welded to the inner plates 25and the end portions of the transverse tubular member 2d. Each pair ofplates 25 and 26 is rigidly interconnected by one or more spacers 29,and the upper ends of the frame plates 25 and 255 are apertured toreceive a pivot pin 3!.

The leveling frame unit 22 comprises a rigidstructure made up of atransverse tubular mem ber 35 to each end of which is rigidly connected,as by welding, a pair of closely spaced plates 3% and 31, the spacingbetween the plates being such that they fit snugly between the upperportions of themain frame plates 25 and 26, as best shown in Figure 2.The lower rear portions of the plates 35 and 37 are provided with a pairof apertures 39 adapted to receive the associated pivot pin 3| andprovided for two positions of the latter, as best shown in Figure l. Thepins 3! and associated parts provide a hinged connection between themainfram unit 24 and the leveling frame unit 22 whereby one part isconstrained to move relative to the other about a transverse hinge axis,as defined by the pins 3!. The latter may be of any suitableconstruction but preferably are relatively short cylindrical membershaving grooves at the end portions to receive snap rings il (Figure 10)which detachably hold theassociated parts in assembled relation.

A draftlink support in the form of a drawbar bracket L9 is adapted to besecured by a plurality of bolts 5i and 52 to the tractor drawbar support12. The drawbar brackettii includes pairs of upstanding lugs 53, eachprovided with a pair of apertures 5 by which each pair of lugs isadapted to receive aquick detachable pin 55 in either of two optionalpositions. The construction of the pins 55 is best shown in Figures 14and 15, Each pin includes a shaft portion 5 and a handle portion 58, theshaft portion beinginsertable through the openings in the lugs and/orother parts to receive it. Theend of. the shaft section 57 is slabbedoff, as shown at 59, tapered at its outer end, as shown at 63, and isprovided with an annular groove 6! which lies between a cylindricalportion 62. and the main body of the shaft section 5?. The slabbed offportion 59 lies at the side adjacent the handle 58 and is thus arrangedso that the pin may be inserted inopenings arranged to fit the shaftsection 51 with the exception that one of the inner openings, .as theopening in the inner lug portion 53, is provided with an inwardlydirected section 63 which is circularly complementary with respect tothe slabbed off portion 59. Thus, when the pin 55 is turned to bring thehandle section 58 upwardly and inserted in that position in theopenings, the slabbed oif portion 59 receives the inner section 63, andthen when the handle section 58 is. turned downwardly, the portion 63interlocks in the groove GI and prevents accidental disconnection of thepin 55. The bolt 52 serves also to pivotally interconnect the tractordrawbar [3 with the tractor drawbar support l2. Ordinarily, the drawbarbracket 59 is left as a more or less permanent part of the tractor, evenwhen the integral tool carrier 1 of the present invention is 4disconnected from the tractor to provide for other uses of the latter.

The lower portion of the tool carrier hitch frame 25 is connected withthe drawbar bracket 56 by link means which not only transmits the draftof the tools to the tractor but also provides for not only up and downmovement of the hitch frame 29 but also lateral swinging and oscillationwith respect to the tractor. Referring now more particularly to Figures1- a pair of lower links 67 extends between the tractor and the lowerportion of the hitch frame 2G. Each link 51 includes an enlargedapertured end portion 68, the sides 69 of which are flanged and embracea spherical bushing ii, the aperture '52 of which is dimensioned to fitsnugly over the associated pivot pin. In order to hold the bushing ll inplace, the flanges 69 are crimped so as to snugly embrace the outerspherical surface of the associated bushing "ii; The front endbushings?! receive the shaft sections 5? of the associated quickdetachable pins 55, and as best shown in Figure 3, the rear end of eachof the links 61 is connected through the associated bushing H with apivot pin l3 that extends through apertures 74 in the lower portions ofthe associated hitch frame plates 25 and 26. Each end of each pin 73 isgrooved to receive a detachable snap ring H, th rings ll holding thepivot pins '53 in place but permitting their ready removal when desired.The hitch pin 53 and associated parts may be substantially identicalwith the connecting pin 3! mentioned above.

A pair of upper link members, each indicated in its entirety by thereference numeral 80, connects the leveling frame unit 22 of the hitchframe 29 with the tractor 2. Preferably this connection is made throughthe tractor power lift rockshaft 4 and the link members 86 are arrangedto be so connected with the power lift rockshaft 4 as to serve as liftarms for raising the hitch frame 29 and associated tool-receiving barand the tools connected therewith. Each link or power lift arm 88comprises two plates 8! and 82 rigidly interconnected by a spacer 83 andan arcuate part 84 which partially encircles and is concentric withrespect to openings 85 in the forward ends of the plates 8! and 82. Therear ends of each pair of plates 8! and 82 are pivotally connected withthe associated pair of plates 36 and 37 of the leveling frame unit 22,by a quick detachable hitch pin that is identical with the hitch pin 55described above. Thus, the last mentioned hitch pins establish atransverse axis about which the right and left hand links or arm membersare hingedly connected with the leveling frame unit 22 but relativemovement between the parts in any other direction is restrained, notonly by the hinged connection but also by the fact that the levelingframe plates 35 and 3! snugly fit within the lift arm plates SI and 82,as best shown in Figure 2. While we have shown both connections asestablished through a quick detachable pin 55, only one need be quickdetachable. The other may be a pin like that shown in Figure 3. Each arm86 is adjustable relative to the adjacent portion of the leveling frame22 by means of a crank screw 81 which is provided with oppositelythreaded portions 88 and 89 received in swiveled trunnions 9i and 92carried, respectively, by the plates BI, 82 and 36, 31, the members 9!and 92 I having screw-threaded openings to receive the crank screwportions 38 and 89.

The forward end portions of the lifting ar m sides of a ball joint arm95 which, as best shown in Figures 5 and 6, includes a ball section 96and an arm section 8? that extends in between the plate members 8! and82 rearwardly of the rockshaft. The ball section at is provided with asquare opening 98 to fit snugly but shiftably over the associated end ofthe power lift rockshaft Q, and the outer or rear end of each ball jointarm 95 is adapted to be disposed underneath an abutment pin 99 which iscarried by the plate members BI and 82 forward of the swiveled trunnion9 I. The abutment pin $9 may, if desired, be substantially identicalwith the pivot pin I3 described below and, like that member, be providedwith annular grooves at the end to receive retaining snap rings IQI orother fastening means. As will be seen from Figure 1, the outer ends ofthe ball joint arms 95 are disposed underneath the associated abutmentpin 99, whereby the tool carrier I may move upwardly relative to thearms 95, which are held in position by the power lift shaft 4. However,when the latter shaft is rocked in a clockwise direction (Figure 1) thearms 88 and the entire tool carrier I are lifted into a raised ortransport position. A pair of guide clips I133 are welded to the innersides of the plates BI and 82 and diverge downwardly and outwardly attheir lower ends so as to guide the outer end of the associated balljoint arm 95 into position in contact with the abutment pin 99. Each ofthe lift arms as, in any position of adjustment as determined by thecrank screws 8?, is connected as a rigid part of the leveling frame unit22. However, the latter unit is pivotally connected with the rockshaft tthrough the ball joint sections 84, 85 and 93. The leveling frame unit22 pivots relative to the upper portions of the hitch frame 2I by virtueof the pivot pins 3i, as described above.

As best shown in Figures 2 and 10, the left hand lift arm 80 carries apivoted stop bar, indicated in its entirety by the reference numeral HQ.The stop bar IIG is made up of a pair of plates HI and H2 apertured attheir upper ends to receive and be mounted on the stop or abutment pin99, by which the ball joint arm ti; on the left hand end of the powerlift rockshaft 4 engages and raises the left hand arm 85. The lower endof the stop bar plates III and H2 are apertured to receive a pin lid onwhich a stop roller H5 is mounted. The roller I55 is adapted to engage astop plate H6 that is detachably fastened to the tractor rear axlehousing extension 8 by studs I II. The plates II I and H2 are extendedintermediate their ends and apertured to receive a swiveled trunnion I2Iin which the lower threaded end of a crank screw I22 is received. Theupper portion of the crank screw 22 is rotatably supported on a swiveledtrunnion I23 carried by the forward portion of the associated lift armplates BI and 82. Turning the crank screw 122 adjusts the position ofthe stop bar unit iIii relative to the associated lift arm 88 and thusserves to limit the downward movement of the leveling frame unit 22 andhence the entire tool bar-carrier I, relative to the tractor. Atthe'left side of the tractor, the rear end of the ball joint arm 95 isreceived between the stop bar plates I I I and I I2.

The transverse tool bar, on which any one of a plurality ofground-working or crop-working tools or implements may be mounted, isindicated in its entirety by the reference numeral I39. Preferably, thebar 933 extends laterally outward- 1y at opposite sides of the tractorandrearwardly of the rear tractorwheelsIL- Apairof sway fittings I3I,preferably in the form of links, are hingedly connected, as at I32, tothe lower portions of the pairs of vertical plates 25, 2E, and each swayfitting or link I3I is hingedly connected, as at I33, to a tool barcarrying bracket I35. Each bracket is made up of a pair of plates I36and I31, the lower rear portions of which are extended in the form oflugs I38 which are apertured to receive a quick detachable pin 55. Theupper rear portions of each pair of plates i323 and i3? carries a pinI39 which is rigidly secured to the plates I36 and I3? and serves as aspacer therefor. Detachabl carried by each bracket I35 is a couplingmember IQI having an upper forwardly disposed hook section M2 and anapertured portion I53 in which the tool bar I36 is disposed. Theapertured portion I43 is considerably larger than the bar I30, and atthe forward side of the opening M3 a pair of oppositely angled cammingfaces I 36 and Isl are formed. Cooperating with these angled faces I 35and H ll is a pair of clamping members I48 having cooperating angledfaces I49. Each cam member is provided with a pair of vertically spacedopenin s and a rearwardly facing V- shaped notch i5I to receive theforward side of the square bar I3 3. In each cam member I48 one of theopenings, as indicated at I53 (Figure 8), is threaded, and the otheropening, as indicated at its is cored. Thus, when the two cam members I38 are assembled in proper position, as shown in Figure 8, a cap screwI56 may be inserted through the cored opening Iii i in one of the cammembers ids and threaded into the opening I53 in the other cam member.Then by tightening both cap screws I56, from opposite sides of thecoupling member Mi, the tool bar we is firmly and rigidly clamped inposition. A center lug i5"! is carried by upper and lower portions ofthe coupling member I iI for the purpose of centering the upper andlower portions of the two associated cam members I 38.

As best shown in Figures 2 and 12, a transverse bar IBi is connected atits opposite ends to the inner plates of the tool bar receiving bracketsI35 and receives a pair of fixed stops IE2. A plurality of openings 563are formed in the bar iGI between the stops I62, and welded at theirforward ends to the central portion of the transverse tubular member 25are upper and lower sway stops Hit and Isl, the rear ends of which aredisposed, respectively, above and below the-transverse bar ItI. If itshould be desired to limit all lateral movement of the tool bar I39relative to the tool carrier frame, a pair of link locks iii aredisposed in the laterally innermost pair of openings IE3, which arespaced apart so that the link locks iii are in substantial contact withthe rear ends of the sway stop plates I36 and NW. If lateral movement ofthe tool bar is desired, the link locks Iii are moved'through theoutermost openings I53, adjacent the fixed stops I62. The link locks Iiiare constructed as best shown in Figure 13. lssentially, the members H lcomprise a closed member I72 having a depending lug I18 which is adaptedto be removably' disposed in one or the other of the openings I63 at theside of the sway stop plates I66 and IE1.

The mounting of the tool carrier as'so far de scribed on a tractor issubstantially as follows:

After the draft link support or drawbar bracket 5Q is mounted in placeon the tractor, the forward ends of the links 61 are connected to thelugs 53 by the quick detachable pins 55, the rear ends of the draftlinks 61 normally being pe'rma-z n'entlyconnected by the pins 1! to thelower portion of the main frame unit 2'I. One of the lift arms '80 isthen detached at its rear end from the leveling frame unit 22 andindividually mounted on the associated end of the power lift rockshaftby slippin the ball member at over one end of the tractor power liftrockshaft 5. Next, the power lift of the tractor is operated to rock theshaft 4 into its lower position, and then the hitch frame 26 is liftedinto a position to permit the other lift arm 83, which ordinarily ispermanently connected to the leveling frame 22, to be mounted on theother end of the tractor power-liftrockshaft 5. Next, the firstmentioned lift arm 83 is reconnected to the leveling frame 22 by theassociated quick detachable pin 55. This'holds the two lift arms 83 onthe rockshaft 4, the crank screws? of the disconnected lift arm 38beingturned or threaded into the lower swiveled trunnion 92. Lastly, thetransverse bar I33, together with its coupling members idi, is liftedinto a position to engage the hooks I 32 over the pins I39, and then thecoupling members MI are secured in position by inserting the lower rearpins 55 to lock the coupling members l il to the sway brackets I35. Theangular disposition of the sway links I3l with respect to one anothermay be varied, as desired, and thus change the effective hitch pointwhere the brackets I35 and tool bar I are permitted to shift laterallyrelative tothe tractor, by changing the positions of the couplingmembers I4! on the tool bar I38 to vary the lateral distance between thecoupling members.

By turning the crank screws 5! in the same direction simultaneously, therocking of the leveling frame unit 22 as a result thereof serves toraise and lower the tool-receiving bar I 30, and by turning one crankscrew 81 in one direction and the other crank screw 8'! in the otherdirection, the tool bar I36 may be tilted laterally relative to thetractor. As best shown in Figure 11, one end of the bar I30 may beraised a considerable distance relative to the other so as toaccommodate the attachment of a plow or similar implement to the toolbar I36 whereby the plow operates in a level position when one tractorwheel runs in an adjacent furrow. This laterally tilted position of thetool carrier is accommodated by virture of the ball and socket type ofconnection at the front and rear ends of the draft links Gland at theforward ends of the lift links 80 with the rockshaft 4. However, thearms 89 remain substantially in the planes of the side members 25, 26 ofthe main hitch frame unit 2I sothat the amount of tilt is always underthe control of the two crank screws 81. However, even in the tiltedposition, the tool bar l3!) and associated toolsor implements are freeto rise and fall, relative to the tractor, limited only by the contactof the ball joint arms 95 with the associated stop pins 99.

Figure 16 shows a modified form of tool bar construction in which a toolbar 200 is provided with coupling hook members 2! welded directly to thetool bar. While this lacks adjustmentlaterally it forms a cheaperarrangement than the tool bar mounting described above. Each of thecoupling members 20 I is provided with a. hook section 202 and a lowerapertured section 293 whereby the tool bar 200 may be usedinterchangeably with the tool bar I39.

Another modified form of tool bar structure is shown inFigures 18-20.This tool bar constructiondnvolves the :use inf several .tool bars which8. are provided for-clamping cultivator teeth or the like in a staggeredposition so as to reduce the clogging of the teeth when operating undertrashy conditions. Referring now to these figures, we provide a pair ofbrackets -2I-I. These brackets are preferably identical, and hencea'description of one will suffice. Each bracket includes a fore and aftextending bar 215 mounted edgewise. Secured to each-end of each bar is apair of right and left hand tool barclamps 2I6and 2H. Each clampincludes a base section -2I8 having a V- shaped notch .2I9, anupstanding flange portion 22I and a reenforcing lug 222 offset laterallyaway from theplane of the inner face of the flange section 22I. Theupper edge of the flange section 22I is beveled, as at 223 and 224, tofacilitate welding the two clamps at each endof the bar to the bar end.The inneredge of the lugportion 222 is similarly beveled for'the samepurpose. :A pair of the clamps 2I6 and 2I'I is fixed to each end of eachof the tiebars2I5. A cap 226, having a V-shaped notch 2'2'L'is secured,as by bolts 228, to the lower side of each of the tool bar clamps52l6and .2I.I and. provides means for effectively clamping two tool bars I39together. The forward tool bar I3fl is clamped to the coupling membersI'M by the means shown in Figures Land 8 and described in detail above.The tie bars may be disposedeither inwardly or outwardly ofthe couplingmembers Idl, as desired.

While we have shown and described above the preferred structure in whichthe principles of the present invention have been incorporated, it :isto be understood that our invention is not to be limited to theparticular'details, shown and described above, but that, in fact, widelydifferent means may be employed in the practice of the broader aspectsof our invention.

What We claim, therefore, and desire tosecure by Letters Patent is:

1, In a draft device for connecting an implement to .a tractor, agenerally vertically disposed hitch frame adapted to be operativelyconnected with the tractor, a pair of laterally spaced rearwardlyextending brackets connected with the lower portion of said hitch frame,each of said brackets having a pair of vertical laterally spaced apartside walls, a transverse ,pin carried at the upper portions of said sidewalls and extending across the space therebetween, each of said sidewalls being apertured at its lower portion, a transverse tool-receivingbar having a pair of laterally spaced coupling members carried thereby,each coupling member including an outwardly extended portion adapted tobe disposed between the spaced apart side walls of the associatedbracket from said pin downwardly to said lower apertures, each of saidcoupling members being formed at its upper end with an upper hookportionfacing downwardly and adapted to engage over the pin of the associatedbracket, and a lower apertured portion adapted to register with theapertures in the lower portions of said walls, and a coupling pinadapted to be insertedin each set of registering openings fOr couplingsaid transverse tool-receiving bar to said rearwardly extendingbrackets.

2. The invention set forth in claim 1, further characterized by saidcoupling members comprising plate-like parts welded to said tool bar.

3. The invention set forth in claim 1, further characterized by each ofsaid coupling members comprising an opening receiving the associatedtool bar, there being an angled surface at one side of saidbar-receiving opening, a clamping 91' member having a complementarilyformed, angled camming surface adapted to fit against said angledsurface, and means for moving said clamping member along said angledsurface for clamping the tool bar in said coupling member.

4. The invention set forth in claim 3, further characterized by a pairof oppositely arranged angled surfaces on said coupling member, and apair of clamping members having complementarily formed angled surfaces,and means acting between said clamping members for moving them alongsaid angled surfaces and clamping said tool bar in said coupling member.

5. In an agricultural implement, a sup-port, a pair of laterally spacedrearwardly extending brackets connected with said support, each of saidbrackets having an upper portion carrying a pin and a lower aperturedportion disposed substantially underneath said pin, a transversetoolreceiving bar having a pair of laterally spaced coupling memberscarried thereby, each coupling member including an upper extensionformed with a downwardly extending hook portion adapted to engage overthe pin of the associated bracket with the pin lying between the forwardedge of the coupling member and the downvardly extending hook portion,whereby said coupling members and tool-receiving bar may be supportedtemporarily on said bracket-carried pins, and a lower apertured portionadapted to register with the aperture in the associated bracket, and acoupling pin adapted to be inserted in each pair of registering openingsfor coupling said transverse tool-receiving bar to said rearwardlyextending brackets.

6. In a draft device for connecting an implement to a support, a toolbar member, a coupling member having a portion receiving and embracingsaid tool bar member, said coupling member having at one side of saidportion a pair of oppositely angled surfaces, a pair of clamping membershaving complementarily formed angled surfaces adapted to engage,respectively, said first mentioned angled surface, the opposite portionsof said clamping members being shaped to engage said tool bar member,and means acting between said clamping members for moving them towardone another along said first angled surfaces and clamping said tool barin said coupling member.

7. In an agricultural implement, a support, a pair of laterally spacedbrackets connected with said support, each of said brackets having anupper portion carrying a pin and a lower apertured portion disposedsubstantially underneath said pin, a transverse tool-receiving barhaving a pair of laterally spaced coupling members carried thereby, eachcoupling member including an upper extension formed with a downwardlyextending hook portion adapted to engage over the pin of the associatedbracket with the pin lying between the adjacent edge of the couplingmember and the downwardly extending hook portion, whereby said couplingmembers and tool-receiving bar may be supported temporarily on saidbracket-carried pins, and a lower apertured portion adapted to registerwith the aperture in the associated bracket, and a coupling pin adaptedto be inserted in each pair of registering openings for coupling saidtransverse tool-receiving bar to said brackets.

8. For use with a draft device for connecting an implement to a support,which device includes a pair of brackets connected with said support,each of said brackets having an upper portion carrying a pin and a'lowerapertured portion disposed substantially underneath said pin: theimprovement comprising a transverse tool-receiving bar having a pair oflaterally spaced coupling members carried thereby, each coupling memberincluding an upper extension formed with a downwardly extending hookportion adapted to engage over the pin of the associated bracket withthe pin lying between the adjacent edge of the coupling member and thedownwardly extending hook portion, whereby said coupling members andtool-receiving bar may be supported temporarily on said bracket-carriedpins, and a lower apertured portion adapted to register with theaperture in the associated bracket, said lower apertured portion beingspaced in a fore-andaft direction from the associated hook portion adistance such that when the hook portion is engaged over theassociatedbracket pin, the aperture in said apertured portion registerswith the associated bracket aperture.

9. In a draft device for connecting an implement to a tractor, a pair oflaterally spaced apart, draft-transmitting brackets, each of saidbrackets having a pair of vertical laterally spaced apart side walls, atransverse pin carried at the upper portions of said side walls andextending across the space therebetween, each of said side walls beingapertured at its lower portion, a tool support having a pair oflaterally spaced coupling members carried thereby, the lateral spacingof said coupling members corresponding to the lateral spacing of saidbrackets, each coupling member including an outwardly extended portionadapted to be disposed between the spaced apart side walls of theassociated bracket from said pin downwardly to said lower apertures,each of said coupling members being formed at its upper end with anupper hook portion facing downwardly and adapted to engage over the pinof the associated bracket, and a lower apertured portion adapted toregister with the apertures in the lower portions of said walls, and acoupling pin adapted to be inserted in each set of registering openingsfor coupling said transverse tool-receiving bar to said rearwardlyextending brackets.

10. A coupling member for supporting a tool bar or the like, saidcoupling member comprising a part having an opening to receive said toolbar, there being a pair of oppositely angled surfaces at one side ofsaid bar-receiving opening, a pair of clamping members havingcomplementarily formed, angled camming surfaces adapted to fit,respectively, against said angled surfaces, and means for moving saidclamping members toward one another along said angled surfaces forclamping the tool bar in said part.

11. A coupling member for connecting a tool bar with a supportingbracket, said coupling member comprising a part having an opening toreceive said tool bar, there being a pair of oppositely arranged angledsurfaces on said part, and a pair of clamping members havingcomplementarily formed angled surfaces, means acting between saidclamping members for moving them along said angled surfaces and clampingsaid tool bar in the opening in said part, and means on said couplingmember for connecting the latter to said bracket.

12. For use with an agricultural implement having a support and a pairof laterally spaced brackets connected with said support, each of saidbrackets having an upper portion carrying a pin and a lower aperturedportion disposed substantially underneath said pin, the improve" mentcomprising a tool-receiving member, aipa-ir of: laterally spacedcoupling members carried thereby, each coupling member including anupper extension formed with a downwardly extending hock portion adaptedto. engage over the pin of the associated bracket with the pin lyingbetween the adjacent edge of the coupling member and the downwardlyextending hook portion, whereby said coupling members and tool-receivingbar may be supported temporarily on said bracket-carried pins, and alower apertured'por'ti'on adapted" to register with theaperture in theassociated bracket, and a coupling pin adapted to be inserted in eachpair ofregistering openings for coupling said tool-receiving'member tosaid brackets.

JESSE G. LINDEMAN. LAWRENCE F5 ROBERT-"D. KREI-IBIEL. ORIE'. L. DURLAND.

REFERENCES CITED The following references are of record in the file ofthis patent:

Number Number 496,131

1'2 UNITED STATES. PATENTS:

Name Date Ober Oct. 5, 1875 Miller et a1 Oct. 1 1, 1898 Graham Oct. 16,I909 Mooreet a1 Oct. 24, 1911 Thyseli- May 22, 1917 C0oper Apr. 20, 1926Smith Sept. 13, 1938 Tuft Oct. 3, 1 939 Donoho et'al Nov. 11, 1941McCormick et a1. Nov. 17, 1942 Silver Feb. 22, 1944 Ratclifif Apr. 11-,1944 Ariens June 11,1946 O-relind et a1; 2 Nov. 11,1947

FOREIGN PATENTS Country Date. France Ju1y'24, 1919 France Oct. 29, 1926

